Reversible fuse plug



June 24, 1924; 1,498,946

W. O. BESAW REVERS I BLE FUSE PLUG Filed June 23. 1923 E A i Patented June 24, 1924.

WILLIE-O. BESAW, OF REEDLEY, CALIFORNIA.

REVERSIBLE FUSE PLUG.

Application filed June 23, 1923. Serial No. 647,268.

To all whom it may concern."

Be it known that I, WILLIE O. BEsAw, a citizen of the United States, residing at Reedley, in the county of Fresno and State of California, have invented certain new and useful Improvements in Reversible Fuse Plugs, of which the following is a specification.

In carrying out the present invention, it is my purpose to provide a fuse plug where in either end may be screwed into the socket of the house fuse box, the plug comprising a pair of half sections, each of which carries a fusible element, these half sections so formed as to be detached or joined to-' gether in an expeditious manner.

The primary object of the invention is the provision of such a fuse plug that comprises a pair of hollow half sections, each of the same carrying a fusible element, whereby the uppermost one of these sections may be quickly removed for ascertaining whether or not the fusible element in the other half section has been blown out. This is a considerable saving in time due to the fact that it is now necessary to remove the entire number of fuse plugs from a house box in ascertaining which of the same has become blown out. w

A still further object of my invention is to provide such a fuse plug that may be manufactured without the incorporation therein of any of the mica material that is now found in the conventional type fuse plug for thereby lessening the cost of manufacture.

Yet another object is to provide a ,fuse plug'that is extremely'simple of construction and one that may be manufactured and marketed at relatively small cost, the plug embodying at the same time the desired features of efiiciency and durability.

The'nature and advantages of the inven tion will be better understood when the following detailed description is read in connection with the accompanying drawing, the invention residing in the construction, combinatiomand arrangement of parts as claimed.

In the drawing forming part of this a plication, like numerals of reference ind cate similar parts in the several views, and wherein:

Figure 1 is a side elevation of my improved fuse plug, the half sections thereof being joined together,

Figure 2 is a detailed vertical cross sectional view thereof,

Figure 3 is an elevation of one of the half sections comprising the plug, and

Figure 4 is a top plan of this section.

Referring to the drawing in detail, my novel plug comprises a pair of half sections A and B, respectively. Each of these half sections are identical in construction and a description of one will sufiice for both. In actual practice, these half sections are to be joined together in a manner presently to be set forth whereby either one of the sections may be engaged with its complementary socket and whereby the uppermost inoperative half section may be removed for ascertaining whether or not the fusible element in the lower operative half section has been burnt out.

Each of these half sections comprise hollow shells 5, circular in cross section and preferably of porcelain or other nonconducting material. These shells are closed at one end and open at the other end and are flanged inwardly as at 6. The inner edge of the flanges of each of these half sections are formed with a leg 7 upon the free end of which is an outwardly turned lug portion 8 and at a point diametrically opposite the leg 7 of each half section the flange 6 is slotted at 9 which is of a length slightly greater than the width of the leg. At opposite sides of the slots 9 the said flanges of the half sections are channeled a slight distance at 10 for allowing a free movement of the outwardly projecting lugs 8 of said legs 7. It will be obvious that when the half sections are joined as in Figures 1 and 2 the rotation of one half section with respect to the other will be limited by the said lugs 8 engaging the end walls of the channels 10 in the respective half sections.

The closed ends of each of the half sections A and B carry a well known form of transverse contact rivet 11 to each of which is connected one end of a fusible element 12 within the half sections. These fusible elements 12 within the different half sections are preferably at opposite points therein as shown in Figure 2. The other ends of these fusible elements extend through openings in the side walls of the shells 5 and have contact with screw threaded metallic rings 13 surround ing the side walls of the said shells.

In actual practice the half sections A and B are interlocked with each other as shown in Figures 1 and 2 and either one of the halfsections engaged Within a complementary socket. Should one of these fuses within a houw box burn out it is only necessary that the uppermost half section of the fuses within said house box be removed for ascertaining expeditiously the fusible element that has become burned out.

It will of course be apparent that when the fusible element of one half section has become burned out the entire element may be removed and the plug reversed and if desirable a new half section be employed in conjunction with the other half section that Having thus described the invention what I claim as new, and desire to secure by Letters Patent, is

1. A fuse plug of the class described, a pair of half sections of nonconductive material, a fusible element carried by each of said sections, and means whereby said half sections may be detachably joined together.

2. In a fuse plug of the class described, a pair of half sections of nonconductive material, each of the same being open at one end", a fusible element carried by each of said half sections and means whereby said half sections may be detachably joined together in open ended relation.

3. In a fuse plug of the class described. a pair of half sections of nonconductive material, each of the same, being open at one end, a fusible element carried by each of said half sections and means whereby said half sections may be detachably jointed together in open ended relation, a screw threaded metallic ring surrounding each of said half sections and having contact with certain ends of said fusible elements, and contact rivets extending through the closed ends of said sections and having contact with the other ends of said fusible elements.

In testimony whereof I aflix my signature.

- WILLIE O. BESAW. 

